Moved errors out into its own file so that vagrant.rb doesn't get too cluttered

lib/vagrant.rb

@@ -1,6 +1,7 @@
 require 'json'
 require 'virtualbox'
-require "vagrant/util/glob_loader"
+require 'vagrant/errors'
+require 'vagrant/util/glob_loader'
 
 module Vagrant
   # TODO: Move more classes over to the autoload model. We'll
@@ -13,24 +14,13 @@ module Vagrant
     autoload :GroupBase, 'vagrant/command/group_base'
   end
 
-  class << self
   # The source root is the path to the root directory of
   # the Vagrant gem.
-    def source_root
+  def self.source_root
     @source_root ||= File.expand_path('../../', __FILE__)
   end
 end
 
-  class VagrantError < StandardError
-    def self.status_code(code = nil)
-      define_method(:status_code) { code }
-    end
-  end
-
-  class CLIMissingEnvironment < VagrantError; status_code(1); end
-  class BoxNotFound < VagrantError; status_code(2); end
-end
-
 # Load them up. One day we'll convert this to autoloads. Today
 # is not that day. Low hanging fruit for anyone wishing to do it.
 libdir = File.expand_path("lib/vagrant", Vagrant.source_root)

lib/vagrant/errors.rb

@@ -0,0 +1,10 @@
+module Vagrant
+  class VagrantError < StandardError
+    def self.status_code(code = nil)
+      define_method(:status_code) { code }
+    end
+  end
+
+  class CLIMissingEnvironment < VagrantError; status_code(1); end
+  class BoxNotFound < VagrantError; status_code(2); end
+end